(16)
Since the absorption system utilizes no
mechanical pumps or compressors to circulate
the refrigerant within the system, proper leveling
is required to provide correct refrigerant flow in
the gravity-feed system. Without proper leveling,
refrigerant within the cooling coils will collect
and stagnate at certain areas. When this
happens the cooling process will stop.
(17)
On the older style cooling units equipped with
square boiler box covers, this condition can
cause permanent cooling unit failure. As we can
see from this drawing, square boiler box
cooling units utilize an exposed siphon pump
tube which will become excessively super-
heated in an out-of-level condition. This can
allow the rust inhibiting agent to chemically
break down and permanently block or restrict
the normal refrigerant flow through the pump.
Shaking, tipping or so called ‘burping the
refrigerator will not loosen or dislodge the
blockage. The only recommended service
procedure is to replace the cooling unit. To
prevent this occurrence, proper leveling is of
utmost importance when the RV is parked for
any length of time.
THREE REQUIREMENTS
FOR PROPER OPERATION
1. Level
REFRIGERATOR IS TO BE LEVEL
(18)
To level these units, the spirit or bubble level
LEVELS
should be placed in the approximate front and
center of the floor of the freezer compartment.
The coach should then be positioned so that at
least 3/4 of the bubble is within the required
mark while the refrigerator is in operation.
REMEMBER: Failure to property level
a square
b
o
ile
r
box
can
r
es
ult
in
a
l
ack
o
f
cooling
or
permanent damage to the coding
unit.
W h e n
the vehicle is moving, leveling is not critical as
the rolling and pitching movement of the RV will
keep the solution in motion, preventing the
solution from accumulating in the piping.
- -
-
D-6-7
Manual
Compliments
of
Northwest
RV
Supply
Printed
From
http://www.nwrvsupply.com
